Gamma-ray-energy-spectrum measurement method at high counting rate

Abstract

The invention discloses a gamma-ray-energy-spectrum measurement method at a high counting rate. Firstly, output of a detector is connected with input of a high-speed analog-digital converting device and output of the high-speed analog-digital converting device is connected with input of a digital-signal processing device. Output current signals of the detector are directly converted into digital signals. The converted digital signals are processed and information representing energy of to-be-detected rays is extracted so that the energy spectrum of to-be-detected Gamma rays is given. The gamma-ray-energy-spectrum measurement method at the high counting rate solves problems that spectrometer measurement counting rate is limited by traditional spectrometer electronic systems and energy resolution of conventional high-counting-rate spectrometers is hard to ensure. The gamma-ray-energy-spectrum measurement method at the high counting rate is capable of realizing gamma-ray-energy-spectrum measurement at a counting rate of 106cps or higher and ensuring excellent energy resolution.

Description

technical field [0001] The invention relates to the technical field of energy spectrum measurement, in particular to a gamma energy spectrum measurement method at a high count rate. Background technique [0002] The energy parameter is one of the important parameters of the particles or rays emitted by nuclear radiation. In the basic research of nuclear physics and various applications of nuclear radiation measurement, the energy information of the rays is obtained, that is, the measurement of the nuclear radiation energy or the intensity of nuclear radiation varies with the energy. The distribution relationship (that is, the energy spectrum) is of great significance. [0003] Conventional energy spectrum measurement methods use spectrometers based on ionizing radiation, such as sodium iodide spectrometers, high-purity germanium spectrometers, etc. Spectrometers based on ionizing radiation have the advantages of high energy measurement accuracy, modular system design, and t...

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Problems solved by technology

[0008] In order to overcome the limitation of the traditional electronic system on the measurement count rate of the spectrometer and solve the problem that the energy resolution of the conventional high count rate spectrometer is difficult to guarantee, the present invention provides a ray energy spectrum measurement suitable for high count rate and conventional count rate method

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